You can change the setting and observe the effect on the display. Also helps to use the histogram to check the exposure info. Bars should be spread over the middle of the frame and not bunched at the left or the right of this histogram display.

Nice POI flying, however the bright sun is always a photographer enemy. They try to always plan shoot early in morning or evening when sun is down and no real bright light or shadow appear. even overcast days a prefect for videos and photos. If you have to take shots in bright light then filters and photo touch up. You can make some adjustments with the camera settings but best is the correct light.

You can get the pretty good light (in terms of exposure ) using camera settings. Can't get "golden hour" lighting of late-day or early morning, but low ISO is good advice ... in general for all shots to the degree the light will allow. In strong light conditions it's often necessary to increase the shutter speed a bit to avoid blowing out your highlights. I prob would have used an ND 16 for that particular shot.